Automatic feeding attachment for glue-jointers.



B. CARNAHANrH` IVI. WILLIAMS 61 H. W. BERTRAIVI.

AUTOMATIC FEEDING ATTACHMENT FOR GLUE .|0INTEHS.

SHEET I.

APPLICATION FILED MAR. I3. T916.

Patented May 28 4 SHEETS B. H. CARNAHAN', H.` IVI. WILLIAMS & H. W. BERTRAM.

AUTOMATIC FEEDING ATTACHMENT FOR GLUE IOINTEHS.

AP-PLICATION FILED MAR. I3. ISIS.

Patented May 28, 1918.

4 SHEETS-SHEET 2.

Ill/Il a nuff."

B. H. CARNAHAN, H. M. WTLLIAMS & H. W. BERTRAM. AUToMATTc TEEDTNG ATTACHMENT FOR GLUE JOTNTERS.

APPLICATION FILED MAR. 13. 1916. "1,267,511, Patented May 28, 1918.

4 SHEETS-SHEET 3.

3% H M .Effi/ffm A B. H. CAHNAHAN, H. IVI. WILLIAMS & H. W. BERTRAM.

AUTOMATIC FEEDING ATTACHMENT FOR GLUE IOINTEITS.

APPLICATION FILED MAR. I3. I9I5.

Patented May 28, 1918.

4 SHEETS-SHEET 4. W/

@www V609 FFFQF.

BRUCE H. CARNAHAN, HENRY M. WILLIAMS, AND HENRY V7. BERTRAM, OF INDIANAPOLIS, INDIANA.

AUTOMATIC FEEDING .ATTAGHMENT FOR GLUE-JOINTERS.

Application :tiled March 13, 1916.

To all whom t may concern.'

Be it known that we, BRUCE H. CARNA- nA'N, HENRY M. WILLIAMS, and HENRY W. Bnn'rnnir, citizens of the United States of America, residing at indianapolis, in the county of Marion and State of indiana, have invented certain new and useful improvements in Automatic Feeding Attachments for Glue-Jointers, of which the following is a specification, reference being had therein to the accompanying drawing.

'his inventio-n relates to an attachment for wood working machines, especially known or used as an attachment for a glue jointer, and has for its object the production of a simple and efficient attachment which may be readily applied to, made a part of, or built into different machines for conveniently turning over the pieces of material which are being worked upon, thereby eliminating one or more operators previously found necessary to employ in order to accomplish the desired results.

A. still further object of this invention is the production of a simple and eiiicient means which may be attached to a glue `iointer wherein the lumber may be automatically turned over, or in other words reversed for the next operation of the machine without the necessity of requiring an operator to manually lift the lumber and turn the same to the desired position.

Other objects and advantages of the present invention will appear throughout the following specification and claims, and it should be understood that detail changes may be employed without departing 'from the spirit of the invention so long as the construction is covered by the appended claims.

in the accompanying drawings Figure l is a side elevation of a jointer showing the attachment applied thereto.

F ig. 2 is a top plan Viewof a portion of the j-ointer having `the attachment applied *ige is a section taken on line 4--4, of Fig. 2.

Specification of Letters Patent.

Fatented May 28, 1918.

serial No. 83,968.

Fig. 5 is a section taken on line 5--5. of Fig. 2. 4

Fig. 6 is a section taken on line 6-6, of Fig. 2.

Fig. 7 is an enlarged longitudinal section taken on line 77, of Fig. 2.

Fig. 8 is a bottom plan view of the clutch mechanism shown in Fig. 7.

Fig. 9 is a bottom plan View of the clutch mechanism which is adapted to operate the shifting arms.

F ig. l0 is a section taken on line lO-lO, of Fig. 2.

Fig. 11 is a section taken on line ll-ll, of Fig. l0.

Fig. l2 is a section taken on line It-12, of F ig. l0.

Fig. 13 is a section taken on line 18-13, of Fig. l0.

Fig'. lll is a side elevation of the sliding clutch jaw used in connect-ion with the structure shown in Fig. l0.

Fig. l5 is a section taken on line 15-15, of Fig. 7.

Fig. 16 is a section taken on line 16-16, of Fig. 2.

Fig. 17 is an enlarged longitudinal section through one of the roller operating shafts showing the manner in which the driving beveled gear is applied to the shaft.

Fig. 18 is a detailperspective View of the upper end of one of the link arms adapted to operate the clutch for controlling the operation of the shifting arms.

By referring to the drawings it will be seen that l designates the body of the glue jointer or may be substituted by any other suitable wood working machine to which the body of the attachment 2 is applied. For the purpose of clearness this attachment will be referred to hereinafter as the lumber reversing attachment, and by carefully considering F ig.' 2 which shows the attachment in top plan and in considerable detail, it will be seen that a bed plate 3 is employed, which bed plate is secured to the machine l by means of the straps 4l of suitable construction. It should be understood, that a driving shaft 5 passes through the machine 1 and carries at its upper end a pulley 6 of suitable construction and as is employed upon the usual type oi a glue jointed machine. The lovver end or' the driving shaft is provided with a squared neel; 7, Which squared neclr i' lits in a socket 8 ot the triction clutch 9. rlhis friction clutch 9 comprises an upper section which is provided with a depending end 10 having a dependpintle or bolt member 11 projecting therefrom upon which is mounted a coil spring 12. il; cup 13 is carried by the lower end or the boltinember 11, and a nut d is threaded upon the lovver end of this bolt 11 tor the purpose of permitting the tightening oi the tension of the sprihg 12. The lower end ol? the spring 12 in the cup-shaped member 13 as illustrated in Fig. 5 of the drawings. An auxiliary section 15 or" the friction clutch is lreyed to the depending end 10 so as to loe-locked in rotary engagement therewith. A cap 16 isheld in trictional engagement vvit-h the lovver section 15 of the friction clutch f). i plurality of liber or other suitable disks 1'? are carried by the adjacent 'laces of the upper and lovver sections of the 'friction clutch, which disks 17 are adapt-ed to frictionally engage the upper and loiver 'faces of the sprocket vvheel 18 mounted thereon. This sprocket ivheel 18 is loosely mounted upon the depending portion l0' as illustrated in 5, but it should be understood that the spring 12 ivill trictionally hold or loch the sprech-et Wheel 18 in engagement with the friction clutch. Under unduev pressure hovvever, it should be understood that to prevent tl e breaking of other parts of the machine, the yielda-ble engagement ot' the clutch vvith the sprocket vvheel 18 Will permit the rotation of the sprocketindependent ot` the clutch 9 or vice versa? depending, of course, upon the relation ot the pressure to the respect-ire portions ot the machine.

lt should be understood that the bed plate 3 ot the reversing attachment is bolted or otherwise secured to the main portion or the machine l by means of the bolts i9, and a. drivingsprocket 2O is carried by the bed plate 3 upon a shaft 21. l sprocket chain 22 passes around this sprocket 20 and also around the driven sprocket 1S as is clearly illustrated in Figs. '2, 3 and et the drawings. The louer end of this shalt 21 carries a beveled gear 23, which beveled near 23 meshes With a beveled gear 2l carried by a dri ring shaft 25, the dri vvina; shaft 25 ein tending longitudinally et the bod plate 3 and being supported in a suitable. manner by ineans et uitable hangers 7which may he provided therefor. A plurality et driving beveled gears 26 are carried by the shaftand these beveled 26 mesh Ywith beveled gears 27 carried the di p onally er; tending shafts asclearly illustrated in Figs. 3 and -l oi the drawings. rlhese shafts neeneii 28 are provided with universal joints 29 at the upper ends thereof, which universal joints engage stub shafts 30 Jjor driving vertically extending conveyer rollers Sl carried by the adjustable trame 32. @ne of the conveyer rollers 3l is provided With a beveled gear 33 upon the lovveriace thereoifvvhich engages the beveled gear tace Se of the hori- Zontal roller rlfhis horizontal roller 35 is placed near thetoru'ard end of the bed plate 3, or in other Words is placed adjacent the main machine l so as to facilitate the entrance of the lumber from the attachment to the main machine.

rlhe frame 32 is slidably mounted upon a pair ot traclrvva 3G formed upon the bed plate 3, and is yieldably held in its proper position by means of the coil springs 37 mounted upon an adjusting rod 38 passing through a journal or bracket lt should be understood that the tension of this spring 37 may be regulated by means or the bolt Ll0 when so desired.

A plurality ot these trames 32 are positioned at proper points alone the bed plate 3 to suit` the convenience ot the operat r and are similarly constructed to the one previously described with the exception that the horizontal roller is eliminated, and is only carried by one of the fran as illustrated clearly in the drawings.

lt should be understood that the lower ends ot the shafts 28 are lreyed as indicated in Fig. 17 to the beveled gears 2i' so as to permit. the longitudinal adjustment ot the shafts 2S to suit the diti'erent Widths ot lumber which are adapted to pass over the attachment and engage the vertically eX- tending rollers 31.

A shitting arm operatingl shaft Ll1 is car-y ried upon the bottom ot the bed plate 3, and this shaft l1 carries a plurality of arcshaped shifting arms 1l..7 which arc-shaped shitting arms 42 are adapted to work through the transversely extending slots el?) 'formed in the bed plate 3. These arms sli-2 are arranged so to extend substantially diametrically opposite to each other, and are preferably arranged in pairs as clearly illustrated in Figs. 2 and 4 of the drawings. A driven sprocket il is carried by the shaft el, and this sprocket 44E receives a sprocket chain Which sprocket chain -l also passes over a sprocket Wheel f5 carried by the shalt 25 and continually drives the sprocket ll-j vvhich sprocket is loosely mounted upon the shaft d1, as vvell as the clutch section l?. An auxiliary clutch section i8 is keyed te the shaft 4l and is slidably mounted thereon and is adapted to engage the clutch section di' for the purpose et rotating the sli-att Ll1 at certain intervals as Will be hereinafter fully described.

The bed plate 3 is provided With a longi; tudinally extending groove i9 Which is snbstantially centrally arranged upon the bed plate 3 and communicates with the transversely extending slots 43.

A bar 50 is suspended below the bed plate 3, and upon this bar 50 is pivotally mounted a plurality of link arms 51. These link arms 51 are pivotally connected at their lower ends to a connecting link 52. The upper end of each link arm 51 is provided with a cross bar 53 which is of suiiicient length to ht in the slot 49 between the shifting arms 42 as illustrated in Figs. 2 and 3 of the drawings. An adjustable stop 54 is adapted to be secured to one of the bars 53 and constitutes an abutment against which the lumber is adapted to fit for the purpose of slightly moving the bar 53 sufficient to swing the clutch throwing arm or link 55. This clutch throwing arm or link 55 engages the sliding clutch member 48 for throwing the same into engagement with the clutch portion 47, thereby permitting the rotation of the shaft 41. The clutch portion 48 is provided with a projecting lug 56 which is adapted to fit in one of the sockets 57 formed in the journal 58. A coil spring 59 is carried by the shaft 41 and is adapted to normally hold the clutch section 48 out of engagement with the clutch section 47.

By referring to Fig. 11 it will be seen that two sockets 57 are employed upon the journal 58, and it will be further understood that as soon as the pressure upon the lug 56 is released, ywhich by the way will only be for an instant, the clutch throwing arm 55 will again be free. As the lug 56 travels over the face of the journal 58, the shaft 41 will rotate for one-half of a revolution, whereupon the lug 56 coming in contact with one of the sockets 57 will permit the spring 59 to retract the shaft 41 and draw the clutch section 48 out of engagement with the clutch section 47. It should be understood, however, that a piece of lumber is fed across the shifting arms 42, and as the shaft 41 makes one-half a revolution, the piece of lumber or board marked A in Fig. 4 will be shifted from its position shown in full lines by the movement of the arms 42 to the position shown in dotted lines marked B in Fig. 4. As the arms 42 continue to rotate to the position shown in full lines, the turnover arms 60 will be forced from the dotted line position to the full line position, thereby causing the turn-over arm shaft 61 to slightly rotate, and byy so rotating, the clutch section 62 will be forced outwardly into engagement ywith the continuously rotating clutch section 63, thereby permitting the shaft 61 to rotate for one-fourth of a revolu tion. f This is possible in view ofthe fact that the clutch section 62 is provided with a projecting lug 64 adapted to fit in one of thenotches 65 formed in the bearing 66.

Attention is particularly invited to Fig. 15

which shows the arrangement of the notches 65, there being four notches extending at right angles to each other in place of the two notches as previously described in connection with Fig. 11. lt should be understood that the slight rotation of the shaft 61 due to the pressure of the plank or strip of lumber B against the turn-over arm 60 will merely be suiiicient to raise the lug 64 out of engagement with one of the notches 65 for throwing the clutchy section 62 into engagef ment with the clutch section 63, the clutch then moving the shaft 61 a. fourth of a revolution. A coil spring 67 is carried by the shaft 61 and is adapted to normally hold the clutch section 62 out of engagement with the clutch section 63. A sprocket wheel 68 is loosely mounted upon the shaft 61, and this sprocket wheel 68 is driven by means of a sprocket chain 69 which also passes over a sprocket wheel 70 indicated in dotted lines in Fig. 2 and also indicated in Fig. 3.

It should be understood that the plank indicated at A is standing upon one of its side edges, and the arms 42 will throw this plank A to a horizontal posit-ion so as to lie upon one of its sides. Howeven'when the fingers of the turn-over arms 60 which extend at right angles to each other engage the plank B and the shaft 61 is rotated for a fourth of a revolution, the plank B will be turned up upon its opposite side edge to that illustrated in full lines in Fig. 4, thereby placing the plank or piece of lumber in position for jointing upon its opposite edge upon its return to the jointing machine. It should be understood that the roller 35 will assist in forcing the plank or piece of lumber into the j ointer, and that the rollers 31 will also assist in moving the plank longitudinally of the attachment illustrated.

It should be further understood that when it is so desired the adjustable stop 54 may be transferred from one of the head portions 53 to any 0f the others to suit the length of pieces of lumber which are being worked.

The operation of the machine is as follows A piece of lumber which we will refer to as a plank is fed from the joint-ing machine through the passage or trackway 71 and engages the abutment 54 which is illustrated upon the last link 51. This will shift the clutch section 48 into engagement with the clutchsection. 47 .and by being so shifted, the shaft 4l. will rotate for one-half a. revolution thereby throwing the plank A shown in full lines from a vertical to a horizontal position indicated. inv dotted lines by the letter4 B. After thisoperation and as the arms 42 are completing their one-half revolution, the plank Bwill hear against one series of the fingers o f the Yturn-over arms 60 and bring the same from a partiallyinclined to a vertical position, that is to say from the ClOtGd line position to the full lineposition. Thisslight movement will be sufficient to throw the clutch section 6:2 int-o engagement with the clutch section 63, whereupon the shaft 6l will bey rotated for a fourth of a revolution as previously described. The planlr will then be entirely inverted, and will then be ,returned over ytheroller intorthe channel yor trackway 72? of they machine l.

lt should be understood that theplanls will` feed tliroughthe passage or track-way Tl upon its ledge and as thengers l2 yare swung, the plank will be thrown upon its sine as shown in Fig. el; due tothe fact that the edge is very narrow and when pressure brought to bear upon the side of the plank, the same vwill naturally tilt orfiop over.` rflieplanh will be shifted to the side of the machineand will be engaged bythe turn-over arms 6() whereupon thelglanli will be again rested upon its opposite edge thereb-y entirely inverting the planlr.`

Having thus described the invention, wnat isV claimed as new is l. A kdevice of the class described comprising a body, means for engaginga plank and moving the same fromya yerticalnto a horizontal position, and means for, turning @aid plank from a horizontal to a vertical position whereby a piani; `may be entirely inverted to restupon its opposite side edge.

sin attachment for a `wood working machine for inverting a piece-of material delivered from said machine without the aid of an operator comprising a body, shiftingmeans carried by said body, means adapted tobeengaged by a piece of material for throwing said shifting 4means into operation,and turn-,over means carried by said body and `adapted to raise a strip of material from a 4lmrizontal to a yvertical position.

3. An attachment of the class described comprising a frame, said frame provided with a bed plate, a plurality of turn-over arms carried by said bed plate, shifting arms carried by said frame, driving means, tripping means adapted to throw said drivingl means into engagement with said shifting armswhen said tripping means is engaged by a piece of material, and turnover means coperating with said shifting arms for changing a piece of material from resting upon its side to rest upon theedge.

el. A. machine of the class described comprising ka frame, shifting arms carried by said frame, a turn-over arm supporting shaft carried by said frame, turn-over arms carried4 by said supporting shaft, clutch means coperating `with said shaft, tripping means for throwing said clutch means to an operative position, means for causing therotationof said shaft one-half of a revolution, and said turn-over arms cooperating with said shifting arms whereby said shifting and turn-over arms willbentirely invert a piece of'material fed through said machine.

5. A machine of the classdescribed comprising a base plate shifting; armslcarried thereby, means for swinging said shifting arms, a second shaft, a plurality of turnover arms carried by said second shaft, a clutch carried by said second shaft, Land said clutch adaliited to bethrownrintov engagement by the slight rotation of said turn-over arms whereby the shaft supporting said turn-over arms may be rotated for one-fourth of a revolution.

6. i machine of the class described comprising' a bed plate` a turn-over arm suppori-tingk shaft, a shifting arm supporting shaft, a plurality of oppositely extending arc-shaped shifting arms carriedjby` said last mentioned shaft, a plurality of angularly extending turn-over fingers carried by said firstanentioned shaft, tripping means for throwing said shifting arm supporting shaft into an operative position whereby said shifting-*arms will be swung for onehalf of a revolution, said shifting arms adapted to throw a piece of material upon its side from its edge and adapted to press said piece ofy material against one of said fingers of said turn-over arms thereby ro tating said first-mentioned shaft slightly whereby said first-mentioned shaft may be thrown to an operative position for permitting said first-mentioned shaft to rotate for onesfourth of a revolution.

'7. A machine of the class described comprising a bed plate, a turn-over arm supporting shaft, a shifting arm supporting shaft, a plurali-tyv of oppositely extending arc-shaped shifting arms carried by said last-mentioned shaft, a plurality of angularly extending turn-over lingers carried by said first-mentioned shaft,vtripping means for throwing said shifting arm supporting shaft into an operative position Vwhereby said shifting arms will be swung for onehalf of a revolution, said shifting arms adapted to throw a piece of material upon its side lfrom its edge and adapted to press saitL pieceof material against one of said fingers of said turn-over arms thereby rotating said iirst-mentioned shaft slightly whereby said `first-mentioned shaft may be thrown to an operative position for permitting said iirstfmentioned shaft to rotate for .onefourth of a revolution, and means for returning said piece of material toward the entrance end of said bed plate.

8. A machine of the class described comprising a. bed plate, a turn-over arm supporting shaft,` a shifting arm supporting shaft, a plurality of shifting arms carried by said last-mentioned shaft, a plurality of turnfover lingers carried by said rst-mentioned shaft, clutch means carried by each shaft, tripping means cooperating with said clutch means of said last-mentioned shaft for causing the swinging of said shifting arms when said tripping means is actuated for throwing a piece of material upon its side, said material having entered upon its edge, said piece of material adapted to be thrown against one of said turn-over lingers and said shifting lingers adapted to press said piece of material against said turnover fingers for swinging one of said turnover tingers to a perpendicular position, whereby said iirst-mentioned shaft will be slightly rotated for throwing said clutch carried thereby to an operative position whereby said shaft. will be rotated for one-fourth of a revolution, and means for normally driving said clutch mechanism.

A machine of the class described comprising a bed plate, a friction driving mechanism, a chain cooperating with said fric- 'tion driving mechanism, an operating shaft,

means for driving said operating shaft through the medium of said chain, a shifting arm supporting shaft, a turn-over arm supporting shaft,y a clutch carried by each shaft, said clutch of said shifting arm supporting shaft provided with a pair of notches formed therein7 said clutch comprising a pair of clutch sections, one of said clutch sections provided with a lug adapted to fit in said notches. yieldable means for normally holding said lug in said notches, tripping means for slightly rotating said sliding section of said clutch for throwing said slidingl section into engagement with the stationary section of said Clutch whereby said Erst-mentioned shaft will be rotated for swinging said shifting arms for onehalf of a revolution. said lug upon said clutch adapted to engage said notches when rotated for one-half of a revolution whereby said sliding section of said clutch may be thrown to an inoperative position at each half revolution of said first-mentioned shaft, and said shifting arms adapted to engage a piece of material and press the same in engagement with said turn-over arms for slightly rotatingl the same and throwing said clutch carried thereby to an operative position whereby said turn-over arm supporting shaft will be rotated for one-fourth of a revolution.

l0. A machine of the class described comprising a bed plate. means for inverting a piece of material passing thereover, return rollers adjustablv mounted upon said bed plate and adapted to facilitate the return of a piece of material toward the feeding end of said bed plate, tracks carried by said bed plate, a frame supporting each feeding roller and slidablv mounted upon said tracks, and yieldable means for normally urgingr said frame toward a piece of material adapted to be engaged thereby.

ll. A machine of the class described comprising a bed plate, means for inverting a piece of material passing thereover, return rollers adjustably mounted upon said bed plate and adapted to facilitate the return of a piece of material toward the feeding end of said bed plate, tracks carried by said bed plate, a frame supporting each feeding roller and slidably mounted upon said tracks. yieldable means for normally urging said frame toward a piece of material adapted to be engaged thereby, and means for regulating the tension of said yieldable means.

12. A machine of the class described comprising a bed plate, means for inverting a piece of material passing thereover, return rollers adjustably mounted upon said bed plate and adapted to facilitate the return of a piece of material toward the feeding end of said bed plate, tracks carried by said bed plate, a. frame supporting each feeding roller and slidably mounted upon said tracks, yieldable means for normally urging said frame toward a piece of material adapted to be engaged thereby, means for regulating the tension of said yieldable means, one of said feeding rollers provided with a beveled gear upon the lower end thereof, a horizontal feeding roller provided with a beveled gear adapted to mesh with said firstmentioned beveled gear and adapted to engage the lower edge of a piece of material adapted to pass thereover.

18. A machine of the class described comprising a bed plate, means for inverting a piece of material passing thereover, return rollers adiustablv mounted upon said bed plate and adapted to facilitate the return of a piece of material toward the feeding end of said bed plate, tracks carried bv said bed plate, a frame supporting each feeding roller and slidably mounted upon said tracks, yieldable means for normally urging said frame toward a piece of material adapted to be engaged thereby. means for regulating the tension of said yieldable means. one of said feeding rollers provided with a beveled gear upon the lower end thereof, a horizontal feeding roller provided with a beveled gear adapted to mesh with said firstmentioned beveled gear and adapted to engage the lower edge of a piece of material adapted to pass thereover, each vertical feeding roller provided with a depending shaft` a universal joint carried by each vertical shaft. a plurality of driving shafts connected to said universal ioint, and means for driving` said driving` shafts.

14. A machine of the class described comprising a bed plate, means for inverting a piece of material adapted to pass thereover, a plurality of link arms. a supporting bar, said link arms pivotally secured to said supporting bar, a link connecting the lower ends of said link arme, a Sliding clutch, a clutch when a piece of material obli-ts against said tin-owing ann connected to said link and en stop.

gaging said @hitch for tiiiowing said clutch to in testimony whereof We hereunto ax l0 an opeiative position, each link arm provided ouil signatures.

with a head, and a detachable stop adjustv BRUCE H. CARNAHAN. ably Connected io one of Said heads fof a- HENRY M. WLLAMS. eilitatingthe thowing of said Clutch ann HENRY W. BERTRAM.

Copies of his patent may 'be ob'taiiie foi* ve Cenis each, by axdiessing the Commssonei' of Eatent, Washington; 

